body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    background-color: #f4f4f4;
}

.container {
    text-align: center;
}

h1 {
    color: black;
}

.board {
    display: grid;
    grid-template-columns: repeat(3, 100px);
    grid-gap: 5px;
    margin-top: 20px;
}

.cell {
    width: 100px;
    height: 100px;
    border: 2px solid #333;
    background-color: #ddd;
    font-size: 3em;
    line-height: 100px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.cell:hover {
    background-color: #c9c9c9;
}

.message {
    margin-top: 20px;
    font-size: 1.5em;
}

.reset-btn {
    margin-top: 20px;
    padding: 10px 20px;
    font-size: 1em;
    cursor: pointer;
    background-color: orangered;
    color: #fff;
    border: none;
    border-radius: 5px;
    transition: background-color 0.3s ease;
}

.reset-btn:hover {
    background-color: #555;
    color: darksalmon;
}